Spec Sizes

Audi A4 vs BMW M3 Dimensions & Size Comparison

Comparing 2018 vs 2023 catalog dimensions. Audi A4 · BMW M3

Same scale for both vehicles. Generic silhouette — proportional to measured length, height, width, wheelbase, and clearance.

Side view
  • Length186.1 in
  • Height56.2 in
  • Wheelbase111.0 in
  • Ground clearance5.0 in
  • Curb weight3,450 lb
Front / width
  • Width72.5 in
  • BMW M3 width74.3 in

Which is bigger?

  • Length: Audi A4 is 3.0 in shorter (186.1 in vs 189.1 in)
  • Width: Audi A4 is 1.8 in narrower (72.5 in vs 74.3 in)
  • Height: BMW M3 is 0.3 in taller (56.2 in vs 56.5 in)
  • Wheelbase: BMW M3 has a 1.5 in longer wheelbase (111.0 in vs 112.5 in)
  • Curb weight: BMW M3 is 465 lb heavier (3,450 lb vs 3,915 lb)

Biggest size differences

  1. Curb weight: BMW M3 is 465 lb heavier (3,450 lb vs 3,915 lb)
  2. Width: Audi A4 is 1.8 in narrower (72.5 in vs 74.3 in)
  3. Length: Audi A4 is 3.0 in shorter (186.1 in vs 189.1 in)
  4. Wheelbase: BMW M3 has a 1.5 in longer wheelbase (111.0 in vs 112.5 in)
  5. Height: BMW M3 is 0.3 in taller (56.2 in vs 56.5 in)

Practical verdicts

  • Easier to fit in a short garageAudi A4 — Audi A4 is shorter by 3.0 in Check garage fit for Audi A4 · garage fit for BMW M3
  • Narrower for tight parkingAudi A4 — Audi A4 is narrower by 1.8 in
  • Smaller exterior footprintAudi A4 — Based on length × width (Audi A4)

Dimension comparison

SpecAudi A4BMW M3Difference
Length186.1 in189.1 in3.0 in
Width72.5 in74.3 in1.8 in
Height56.2 in56.5 in0.3 in
Wheelbase111.0 in112.5 in1.5 in
Ground clearance5.0 in——
Curb weight3,450 lb3,915 lb465 lb

Values use trim midpoints when a model year lists a range.

Compare by year

Overlapping model years with dimension data.

Already own one of these cars?

Jump to maintenance sizes on the vehicle page — tires, wipers, battery, and oil when present in the catalog.